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Cheap flights from Ontario to Duluth from $428

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Duluth departing on 6/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Duluth

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:30 am - 5:34 pm
ONT
-
DLH
9h 04m
1 stop
United Airlines Logo
3:03 pm - 10:51 pm
DLH
-
ONT
9h 48m
1 stop
$508United Airlines
Sat, May 23 - Wed, May 27
United Airlines Logo
6:30 am - 5:34 pm
ONT
-
DLH
9h 04m
1 stop
United Airlines Logo
5:00 am - 5:28 pm
DLH
-
ONT
14h 28m
2 stops
$544United Airlines
Sat, May 23 - Wed, May 27
United Airlines Logo
5:00 am - 5:34 pm
ONT
-
DLH
10h 34m
2 stops
United Airlines Logo
5:00 am - 5:28 pm
DLH
-
ONT
14h 28m
2 stops
$580United Airlines
Sat, May 23 - Wed, May 27
United Airlines Logo
6:39 pm - 10:43 am
ONT
-
DLH
14h 04m
2 stops
United Airlines Logo
3:03 pm - 10:51 pm
DLH
-
ONT
9h 48m
1 stop
$609United Airlines
Tue, May 26 - Sat, May 30
United Airlines Logo
6:39 pm - 10:43 am
ONT
-
DLH
14h 04m
2 stops
United Airlines Logo
5:00 am - 5:56 pm
DLH
-
ONT
14h 56m
2 stops
$614United Airlines
Tue, May 26 - Sat, May 30
United Airlines Logo
1:18 pm - 12:53 am
ONT
-
DLH
9h 35m
2 stops
United Airlines Logo
6:10 pm - 10:26 pm
DLH
-
ONT
30h 16m
1 stop
$632United Airlines
Fri, Oct 16 - Sun, Oct 18
Delta Logo
1:29 pm - 10:44 pm
ONT
-
DLH
7h 15m
2 stops
Delta Logo
4:30 pm - 10:45 pm
DLH
-
ONT
8h 15m
2 stops
$689Delta
Wed, May 20 - Sun, May 24
United Airlines Logo
6:30 am - 11:11 pm
ONT
-
DLH
14h 41m
1 stop
United Airlines Logo
3:03 pm - 10:51 pm
DLH
-
ONT
9h 48m
1 stop
$742United Airlines
Tue, May 26 - Sat, May 30
United Airlines Logo
6:59 pm - 11:11 pm
ONT
-
DLH
26h 12m
2 stops
United Airlines Logo
3:03 pm - 10:51 pm
DLH
-
ONT
9h 48m
1 stop
$863United Airlines
Wed, May 20 - Sun, May 24
United Airlines Logo
1:50 pm - 10:43 am
ONT
-
DLH
18h 53m
2 stops
United Airlines Logo
7:03 am - 5:56 pm
DLH
-
ONT
12h 53m
2 stops
$888United Airlines
Fri, May 22 - Mon, May 25

United Airlines flights from Ontario to Duluth

Our best United Airlines deals on Ontario to Duluth flight tickets
United Airlines
May 23
ONT6:30 amOntario
9h 04m
1 stop
DLH5:34 pmDuluth Intl
May 27
DLH3:03 pmDuluth Intl
9h 48m
1 stop
ONT10:51 pmOntario
$508
United Airlines
May 23
ONT6:30 amOntario
9h 04m
1 stop
DLH5:34 pmDuluth Intl
May 27
DLH5:00 amDuluth Intl
14h 28m
2 stops
ONT5:28 pmOntario
$544
United Airlines
May 23
ONT5:00 amOntario
10h 34m
2 stops
DLH5:34 pmDuluth Intl
May 27
DLH5:00 amDuluth Intl
14h 28m
2 stops
ONT5:28 pmOntario
$580

Delta flights from Ontario to Duluth

Our best Delta deals on Ontario to Duluth flight tickets
Delta
May 20
ONT1:29 pmOntario
7h 15m
2 stops
DLH10:44 pmDuluth Intl
May 24
DLH4:30 pmDuluth Intl
8h 15m
2 stops
ONT10:45 pmOntario
$689
Delta
Jun 13
ONT1:00 pmOntario
7h 50m
2 stops
DLH10:50 pmDuluth Intl
Jun 18
DLH4:30 pmDuluth Intl
9h 19m
2 stops
ONT11:49 pmOntario
$1,014
Delta
Jun 13
ONT1:00 pmOntario
7h 50m
2 stops
DLH10:50 pmDuluth Intl
Jun 19
DLH4:30 pmDuluth Intl
9h 19m
2 stops
ONT11:49 pmOntario
$1,129

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Duluth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 10, 2026.
Use the filters below to find and compare flights from Ontario to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 5/23

6:30 am-5:34 pm

1 stop9h 04m

Duluth Intl

Wed 5/27

3:03 pm-10:51 pm

1 stop9h 48m

$508

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 5/23

6:30 am-5:34 pm

1 stop9h 04m

Duluth Intl

Wed 5/27

5:00 am-5:28 pm

2 stops14h 28m

$544

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Sat 5/23

5:00 am-5:34 pm

2 stops10h 34m

Duluth Intl

Wed 5/27

5:00 am-5:28 pm

2 stops14h 28m

$580

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Tue 5/26

6:39 pm-10:43 am

2 stops14h 04m

Duluth Intl

Sat 5/30

3:03 pm-10:51 pm

1 stop9h 48m

$609

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Tue 5/26

6:39 pm-10:43 am

2 stops14h 04m

Duluth Intl

Sat 5/30

5:00 am-5:56 pm

2 stops14h 56m

$614

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Fri 10/16

1:18 pm-12:53 am

2 stops9h 35m

Duluth Intl

Sun 10/18

6:10 pm-10:26 pm

1 stop30h 16m

$632
Quickest round-trip

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Wed 5/20

1:29 pm-10:44 pm

2 stops7h 15m

Duluth Intl

Sun 5/24

4:30 pm-10:45 pm

2 stops8h 15m

$689

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Tue 5/26

6:30 am-11:11 pm

1 stop14h 41m

Duluth Intl

Sat 5/30

3:03 pm-10:51 pm

1 stop9h 48m

$742

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Wed 5/20

6:59 pm-11:11 pm

2 stops26h 12m

Duluth Intl

Sun 5/24

3:03 pm-10:51 pm

1 stop9h 48m

$863

OntarioDuluth

ONT - DLH

ONTDLH

Ontario

Fri 5/22

1:50 pm-10:43 am

2 stops18h 53m

Duluth Intl

Mon 5/25

7:03 am-5:56 pm

2 stops12h 53m

$888

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Duluth from

How to get the cheapest flight ticket from Ontario to Duluth

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Ontario to Duluth flights?

You could potentially save up to 37% on your flight if you consider stops on a Ontario to Duluth flight.

When to book flights from Ontario to Duluth

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Duluth according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Duluth (ONT to DLH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Duluth

Fastest flight time

7h 49m

Direct flights

None
The fastest flight from Ontario to Duluth takes 7h 49m
There are no direct flights from Ontario to Duluth. There are no popular flight routes from Ontario to Duluth.
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Frequently asked questions about flying from Ontario to Duluth

  • How far is Ontario to Duluth Intl by plane?

    Duluth Intl is 1593.1 mi away from Ontario. Typically, this will take 7h 49m by plane in normal conditions.

  • When did momondo last update prices for flights from Ontario Airport to Duluth Intl Airport?

    Prices for flights from Ontario Airport to Duluth Intl Airport were last updated today.

  • How old do you have to be to fly from Ontario Airport to Duluth Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Duluth Intl Airport.

  • What documentation or ID do you need to fly to Duluth Intl Airport?

    The travel and health documents required for your trip to Duluth Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Duluth Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior
Hayward
Cloquet

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Duluth?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Duluth from Ontario.

Can I find flights from Ontario to Duluth with flexible booking policies on momondo?

All flight searches from Ontario to Duluth on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Duluth?

Once you have performed a search for Ontario to Duluth flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Duluth right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Duluth flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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